<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="信息描述">
        <el-tag type="info">excel模版说明</el-tag>
        <el-tag>
          <i class="el-icon-download" />
          <a
            :href="
              OSS_PATH +
                '/excel/%E8%AF%BE%E7%A8%8B%E5%88%86%E7%B1%BB%E5%88%97%E8%A1%A8%E6%A8%A1%E6%9D%BF.xls'
            "
            >点击下载模版</a
          >
        </el-tag>
      </el-form-item>

      <el-form-item label="选择Excel">
        <el-upload
          ref="upload"
          :auto-upload="false"
          :on-success="fileUploadSuccess"
          :on-error="fileUploadError"
          :disabled="importBtnDisabled"
          :limit="1"
          :action="BASE_API + '/eduservice/edu-subject/addSubject'"
          name="file"
          accept="application/vnd.ms-excel"
        >
          <el-button slot="trigger" size="small" type="primary"
            >选取文件</el-button
          >
          <el-button
            :loading="loading"
            style="margin-left: 10px;"
            size="small"
            type="success"
            @click="submitUpload"
            >上传到服务器</el-button
          >
        </el-upload>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
export default {
  data() {
    return {
      BASE_API: process.env.BASE_API, // 接口API地址
      OSS_PATH: process.env.OSS_PATH, // 阿里云OSS地址
      importBtnDisabled: false, // 按钮是否禁用,
      loading: false
    };
  },
  created() {},
  methods: {
    //点击按钮上传到服务器中
    submitUpload() {
      this.importBtnDisabled = true;
      this.loading = true;
      //js: this.document.getElementById("upload").submit(),一个上传提交表单
      this.$refs.upload.submit();
    },
    //上传成功的方法
    fileUploadSuccess() {
      if (response.success === true) {
        this.loading = false;
        this.$message({
          type: "success",
          message: '添加课程分类成功'
        });
      }
      //跳转到课程分类列表
      this.$router.push({ path: "/subject/list" });
    },
    //上传失败的方法
    fileUploadError() {
        this.loading = false;
        this.$message({
          type: "error",
          message: '添加课程分类失败'
        });
    }
  }
};
</script>
